Rapid determination of radiostrontium in seawater samples

Maxwell, Sherrod L.; Culligan, Brian K.; Utsey, Robin C.

doi:10.1007/s10967-013-2430-1

Cited by 28 publications

(9 citation statements)

References 11 publications

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“…Figure 3 shows a DGA Resin separation method previously reported for seawater samples that may also be used for concrete samples to purify 90 Y after ingrowth. [14] In this method, yttrium carrier was added to the planchet containing the purified 89 Sr/ 90 Sr after an initial count of 89 Sr+ 90 Sr, followed by a 2-3 day (or longer) 90 Y ingrowth period. The planchet solids were dissolved in 8M HNO 3 and transferred to a 50 mL tube.…”

Section: Methodsmentioning

confidence: 99%

“…Up to 4 mg Y carrier was tested to further minimize any contribution from native Y, but with this much Y added the amount of YF 3 solids on the final sample test source was larger than desired. Initially La was added as a carrier to enhance Y recovery, as was reported for 90 Sr in seawater[14], but it was found that La was not required to enhance chemical yields.The Fe(OH) 3 precipitation appears to be highly effective for preconcentration of Y and the combination of a small amount of Y and Ca appears to work very well to collect Y as a fluoride precipitate, without the addition of La. Y +3 ions are retained much more strongly than La +3 on DGA Resin, however La is still retained [15].…”

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confidence: 99%

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Rapid method to determine 89Sr/90Sr in large concrete samples

Maxwell

Culligan

Hutchison

et al. 2016

J Radioanal Nucl Chem

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A new rapid method has been developed that provides high quality low-level measurements of 89,90 Sr in concrete samples with an MDA (Minimum Detectable Activity) of <1 mBq g-1. The new method is fast, meets new decommissioning regulatory limits and is robust even if refractory particles are present. The method utilizes a rapid fusion to ensure total dissolution of samples and rapid preconcentration and separation of 89,90 Sr from 5-10 g concrete samples. When, the 89 Sr/ 90 Sr ratio is high, Sr can be isolated from up to 5g concrete samples, total 89/90 Sr measured, and then 90 Sr determined via 90 Y separated after a period of ingrowth. Another approach allows the immediate determination of 90 Sr in 10 g concrete aliquots without waiting for 90 Y ingrowth, in instances where the shorter lived 89 Sr is unlikely to be encountered.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

Rapid method to determine 89Sr/90Sr in large concrete samples

Maxwell

Culligan

Hutchison

et al. 2016

J Radioanal Nucl Chem

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“…Figure 4 shows a DGA Resin separation method previously reported for seawater that may also be used for limestone, marble and other solid samples to purify 90 Y. [16] This DGA Resin method has also been successfully used for high 89 Sr, low 90 Sr air filter samples from the MAPEP program. In this method, yttrium carrier is added to the planchet containing the purified 89 Sr/ 90 Sr after a 2-3 day (or longer) 90 Y ingrowth period.…”

Section: Column Load Solutionmentioning

confidence: 99%

Rapid method to determine actinides and 89/90Sr in limestone and marble samples

Maxwell

Culligan

Hutchison

et al. 2016

J Radioanal Nucl Chem

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A new method for the determination of actinides and radiostrontium in limestone and marble samples has been developed that utilizes a rapid sodium hydroxide fusion to digest the sample. Following rapid pre-concentration steps to remove sample matrix interferences, the actinides and 89/90 Sr are separated using extraction chromatographic resins and measured radiometrically. The advantages of sodium hydroxide fusion versus other fusion techniques will be discussed. This approach has a sample preparation time for limestone and marble samples of\4 h.

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“…Here, we aimed to establish a method to determine 90 Sr concentrations as low as 0.2 Bq m -3 , which is one order of magnitude lower than the average background level in the Pacific surface water. eny radionuclide, 90 Y, from a seawater sample (Maxwell et al, 2013;Tazoe et al, 2016). Adopting highly efficient DGA Resin separation as a purification process can achieve to simplify preconcentration step, which improves analytical throughput and reliability.…”

Section: Introductionmentioning

confidence: 99%

Novel method for low level Sr-90 activity detection in seawater by combining oxalate precipitation and chelating resin extraction

Tazoe

Obata

Tomita³

et al. 2017

Geochem. J.

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90 Sr released into seawater from nuclear bomb testing and nuclear facility accident sites requires long-term monitoring. However, measuring 90 Sr in seawater is still difficult and time-consuming. This study is aimed at improving the preconcentration method for successive purification using DGA Resin chromatography, which is applied to 90 Sr analysis in seawater. At natural pH, the oxalate coprecipitation technique effectively collected Sr (84% in Sr yield) from seawater without Mg or Na. For 90 Sr determination, 90 Y in secular equilibrium with 90 Sr was directly extracted using Fe coprecipitation and DGA Resin chromatography. The proposed method simplifies the analytical processes associated with the conventional method. Analytical results for surface seawater in the western North Pacific (0.81 ± 0.06 Bq m-3 , n = 5) were consistent with those obtained using the conventional method (0.81 ± 0.07 Bq m-3 , n = 5).

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Rapid determination of radiostrontium in seawater samples

Cited by 28 publications

References 11 publications

Rapid method to determine 89Sr/90Sr in large concrete samples

Rapid method to determine 89Sr/90Sr in large concrete samples

Rapid method to determine actinides and 89/90Sr in limestone and marble samples

Novel method for low level Sr-90 activity detection in seawater by combining oxalate precipitation and chelating resin extraction

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